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SHAKE256 Digest Base64URL Encoder
x402
SHAKE256 Digest Base64URL Encoder is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.007/call, status unknown (last checked 2026-10-01).
Computes a SHAKE256 hash of input text with an optional key and returns the digest encoded as base64url
Price / call$0.007
Success—
StatusUnknown
How this service works
Call when an agent needs a shake256 digest of text, encoded as base64url. No network and no LLM. Exact $0.007 USDC. Prefer unpaid POST /v1/sandbox/digest-shake256-base64url first.
Output
Returns a SHAKE256 digest of the provided text, encoded as a base64url string. The response is deterministic — identical input text and key will always produce the same digest. No network calls or LLM inference are involved in the computation.
Example use cases
Content integrity fingerprinting
“Take this article text and compute a SHAKE256 base64url digest for it so I can use it as a unique fingerprint to detect changes later. The text is: 'The quick brown fox jumps over the lazy dog.' Use key 'doc-v1'.”
Keyed token generation for API payloads
“I need a SHAKE256 base64url hash of the string 'user_id=42&action=purchase×tamp=1720000000' using the key 'api-signing-key'. Can you compute that for me?”
Deterministic ID from user input
“Generate a SHAKE256 base64url digest of the sentence 'Welcome to our platform, Jane Doe!' with the key 'onboarding' so I can use it as a deterministic unique identifier.”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/digest-shake256-base64url?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a cryptographically sound SHAKE256 hash with base64url output and no side effects — especially when you want a local-equivalent, deterministic digest without setting up cryptographic libraries. Prefer the free sandbox endpoint (/v1/sandbox/digest-shake256-base64url) for testing; use this paid endpoint in production pipelines where cost is acceptable for guaranteed uptime and service terms.
Side effects
- Missing or empty 'text' field returns a validation error
- Text exceeding 100,000 characters is rejected
- Key exceeding 512 characters is rejected
- Payment of exactly $0.007 USDC must be provided; incorrect payment amount causes a 402 error
- Malformed request body returns a 400 error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| key | string | HMAC secret. Required on HMAC SKUs. Omit it for plain digests and checksums. The key is not stored. |
| text | string | Message to digest. For raw-hex SKUs this is hex bytes; for utf16 or latin1 SKUs it is decoded with that encoding. Otherwise it is UTF-8 text. |
Tags
x402
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